Datasheet
TPS65250
www.ti.com
SLVSAA3C –JUNE 2010–REVISED OCTOBER 2012
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VIN Input operating voltage 4.5 18 V
T
J
Junction temperature –40 125 °C
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
MIN MAX UNIT
Human body model (HBM) all pins but LDO
DG
2000 V
Human body model, LDO
DG
1000 V
Charge device model (CDM), VIN
DG
500 V
PACKAGE DISSIPATION RATINGS
(1)
T
A
= 25°C T
A
= 55°C T
A
= 85°C
PACKAGE θ
JA
(°C/W)
POWER RATING (W) POWER RATING (W) POWER RATING (W)
RHA 30 3.33 2.30 1.33
(1) Based on JEDEC 51.5 HIGH K environment measured on a 76.2 x 114 x .6-mm board with the following layer arrangement:
(a) Top layer: 2 Oz Cu, 6.7% coverage
(b) Layer 2: 1 Oz Cu, 90% coverage
(c) Layer 3: 1 Oz Cu, 90% coverage
(d) Bottom layer: 2 Oz Cu, 20% coverage
ELECTRICAL CHARACTERISTICS
VIN = 12 V ±5%, VINB2, VINB3 = 5 V ±5%, T
J
= –40°C to 125°C, f
SW
= 1 MHz (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY UVLO AND INTERNAL SUPPLY VOLTAGE
V
IN
Input voltage range 4.5 18 V
IDD
SDN
Shutdown EN pin = low for all converters 1.3 mA
Converters enabled, no load
Buck 1 = 3.3 V, Buck 2 = 2.5 V,
IDD
Q
Quiescent, low power disabled (Lo) 20 mA
Buck 3 = 7.5 V,
L = 4.7 µH , f
SW
= 800 kHz
Converters enabled, no load
Buck 1 = 3.3 V, Buck 2 = 2.5 V,
IDD
Q_LOW_P
Quiescent, low power enabled (Hi) 1.5 mA
Buck 3 = 7.5 V,
L = 4.7 µH , f
SW
= 800 kHz
Rising V
IN
4.22
UVLO
VIN
V
IN
under voltage lockout V
Falling V
IN
4.1
UVLO
DEGLITCH
Both edges 110 µs
V3V Internal biasing supply 3.3 V
V7V Internal biasing supply 6.25 V
Rising V7V 3.8
V7V
UVLO
UVLO for internal V7V rail V
Falling V7V 3.6
V7V
UVLO_DEGLITCH
Falling edge 110 µs
BUCK CONVERTERS (ENABLE CIRCUIT, CURRENT LIMIT, SOFT START, SWITCHING FREQUENCY AND SYNC CIRCUIT, LOW POWER MODE)
V3p3 = 3.2 V - 3.4 V,
Enable threshold high 1.55
V
ENX
rising
VIH V
0.66 x
Enable high level V3p3 = 3.2 V - 3.4 V
V
3p3
V3p3 = 3.2 V - 3.4 V,
Enable threshold Low 1.24
V
ENX
falling
VIL V
0.33 x
Enable low level V3p3 = 3.2 V - 3.4 V
V
3p3
ICH
EN
Pull up current enable pin 1.1 µA
t
D
Discharge time enable pins Power-up 10 ms
I
SS
Soft start pin current source 5 µA
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